US3945537A - Discharge device for a bunker - Google Patents

Discharge device for a bunker Download PDF

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Publication number
US3945537A
US3945537A US05/596,591 US59659175A US3945537A US 3945537 A US3945537 A US 3945537A US 59659175 A US59659175 A US 59659175A US 3945537 A US3945537 A US 3945537A
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United States
Prior art keywords
discharge
disc
discharge device
bunker
base plate
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Expired - Lifetime
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US05/596,591
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English (en)
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Peter Langen
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G65/00—Loading or unloading
    • B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
    • B65G65/34—Emptying devices
    • B65G65/40—Devices for emptying otherwise than from the top
    • B65G65/48—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems
    • B65G65/4809—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems rotating about a substantially vertical axis
    • B65G65/4836—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems rotating about a substantially vertical axis and moving material over a stationary surface, e.g. sweep arms or wheels

Definitions

  • the invention relates to a discharge device for a bunker for loose material for material which has poor flow properties and has a tendency to form bridges, especially, lignite. Bunkers of this type are filled discontinuously whereas the material is drawn off continuously or quasi-continuously for further use. In the case of lignite, mills are arranged after the bunker and the coal dust is then discharged from them to fire steam generators.
  • a discharge device in which these disadvantages are said to be counteracted is described and illustrated in German Auslegeschrift No. 1,275,470.
  • a conical bunker outlet there is arranged a crescent-shaped discharge member rotating about a vertical axis, above a plate which has a discharge opening in the centre of rotation.
  • a conical hood Above the discharge opening, on the central axis of the bunker, is disposed a conical hood of which the diameter at the lower end is greater than that of the discharge opening, and which extends approximately up to the top of the discharge member.
  • the material introduced into the bunker rests above the working range of the discharge member, on the base plate.
  • the material, which slopes inwards between the lower edge of the hood and the base plate is taken along by the discharge member.
  • a scraper device provided with its own drive is arranged inside the hood, by means of which the angle of slope is to be levelled.
  • the drive means of the discharge member is, on the other hand, arranged below the base plate of the bunker, and is itself controlled to control the quantity of material discharged.
  • hood is surrounded by loose material so that maintenance or repairs leads to problems.
  • a further disadvantage is that the space below the bunker base plate, where it is desirable to arrange a belt conveyor, is at least partially taken up by the drive means for the discharge member.
  • Such a discharge device is suitable only for relatively large bunkers, because the hood with the devices arranged in it cannot be made smaller than a certain size.
  • An object of the invention is to provide a discharge device of the kind initially mentioned in which such disadvantages are avoided, that is, the important parts are easily accessible for maintenance and the space below the base plate is unoccupied; the device shall also be equally suitable for very large and for very small bunkers.
  • a discharge device comprising a discharge member rotating about a vertical axis arranged below a conical bunker outlet and above a base plate having at least one discharge opening, and above the discharge opening there is provided a fixed cover over the discharge member,
  • the discharge member is a centrally mounted discharge disc driven at its periphery projecting horizontally beyond the lower bunker-outlet-rim and having openings separated from each other by bars, and in that each discharge opening is arranged eccentrically in the base plate and its cover extends radially from the bunker outlet wall in the direction of the vertical axis and has adjusting means operable from the outside, for adjusting the height above the disc surface of that edge of the cover below which the disc first passes when it revolves.
  • the centre below the bunker base remains free, since the drive of the discharge member is effected at the side, and that also the adjusting means, for regulating the height of the gap through which the material is tangentially conveyed to the discharge openings, are easily accessible from the outside.
  • This has the additional advantage that regulation usually provided does not have to be effected by means of the speed of the discharge member, although this is also possible in principle, but that the said adjusting means can be acted upon.
  • the speed of the discharge member can only be adjusted slowly because of the relatively large moving mass, whereas the adjusting means can react much more quickly.
  • the arrangement can also be so designed that a second base plate is arranged below the bunker base and this is provided with its own disc as discharge member.
  • the upper bunker base plate has a plurality of discharge openings which are distributed over the total circumference whereas the lower plate has only one or two openings in alignment with an underlying conveyor belt.
  • the metering is in this case effected by the upper disc whilst the lower disc acts as an intermediate conveying means.
  • FIG. 1 is a schematic illustration of an axial section through a first form of device according to the invention
  • FIG. 2 is a top plan view taken along the lines 2--2 of FIG. 1 and partially broken away;
  • FIG. 3 is a section along the line 3--3 of FIG. 1,
  • FIG. 4 shows in a view similar to that in FIG. 1 a section through a second form of device according to the invention.
  • FIG. 5 shows an alternative arrangement for the upper sections of the devices.
  • the outlet 10 of a conical bunker rests by means of lugs 12 or the like on a frame 14 (not illustrated in detail).
  • Inwardly projecting edges 16 may be seen above the actual bunker outlet which serve to relieve the border region in the outlet to some extent of the weight of the loose material stored in the bunker.
  • cover means 20 and guide arrangements 22, described in detail hereinafter, are built, or preferably welded in.
  • the lower edge 24 of the section 18 meets the outer ring 26 of the discharge member 28, which in this region can, if desired, have an upstanding flange so as to form a labyrinth seal.
  • the discharge member is a substantially flat disc with numerous openings 30, between which there are only narrow bars 32.
  • the shape of the openings is so selected that when the disc revolves, the edges of the bars convey more material in the tangential direction at the outer edges than further in, corresponding to the conical shape of the bunker or of the bunker outlet. For, since it is desirable to achieve as uniform as possible a descent of the level of loose material in the bunker over the total cross-section -- different speeds introduce the danger of bridge formation -- more material has to be discharged at the outer edge than close to the middle.
  • the curvature of the bar contours is designed accordingly.
  • the bunker base plate Disposed below the discharge member 28 is the bunker base plate on which the disc rests by means of cams 38. These cams are secured to the underside of the disc (preferably welded on) in such a manner that the base plate is "swept free” successively by the cams and no sediment or any other adhering crust of material can be deposited.
  • the disc is centrally mounted on a large pin 36 which is welded to the base support construction (girders 34) and is sealed from the revolving parts of the discharge member for the protection of roller bearings for the discharge member.
  • the disc is mounted by means of its hub 40 which sits over the pin 36 and has, on its outside, spiral projections 42 and/or cones 44 with or without blades 46.
  • the configuration of the hub and the elements associated therewith depends on the type of loose material. Spirals or blades, when they revolve together with the hub, convey material downwards and to the outside. Although as a result the material is loosened and caking together is counteracted, the action can be so great that the loose material flows more slowly outside the operating range of these elements and there is therefore a danger of bridge formation in the peripheral region of the outlet.
  • lignite lignite
  • lignite it has proved particularly advantageous, for example, to arrange a cone, provided with spiral projections, on the upper side of the hub and to provide a reduction gear between hub and cone so that the cone rotates considerably more slowly than the hub with the disc.
  • the bunker base plate 48 in this embodiment has only two discharge openings 50 which are essentially the shape of a sector of a circle and are diametrically opposite each other.
  • the base plate 48 is supported in the middle and beyond the openings 50 by girders 34, which in turn rest on a framework construction (not shown).
  • Below the openings 50 runs the upper track of a conveyor belt 52 which is supported in the region of the discharge openings by a plurality of rollers 54; the design of the conveyor belt itself does not form a part of the present invention.
  • the entire drive is effected at the outer circumference of the disc which for this purpose has spur-gear toothing 61.
  • a geared motor 60 drives via a reduction gear 62 a pinion 64 which meshes with the toothing 61.
  • the speed of the motor 60 can be selected so that the desired quantity of loose material is discharged at an approximately central position of the adjusting means to be described hereinafter. Fine adjustment is then effected by means of these adjusting means.
  • FIG. 3 shows the structure of these adjusting means.
  • the cover means 20 are hollow and are substantially the shape of a ridged roof.
  • the edge 70 below which the disc 28 passes first (arrow 66) does not close flush with the surface of the disc but leaves a relatively large gap, whereas the edge 72, which comes afterwards in the direction of rotation, extends down to the disc.
  • adjusting means in the form of a slider member 74 which extends radially over the entire length of the cover means and which is adjustable in height.
  • the slider member 74 is for this purpose arranged at the free end of a lever 76 which is in turn joined to a shaft 78.
  • This shaft extends parallel to the edge 70 close to the lower edge 72 and passes through the wall of the bunker outlet. Swivelling the shaft 78 lifts or lowers the slider member 74 and thus increases or reduces the distance between the bunker base plate and the lower edge of the slider member. The greater the gap there between, the more material is discharged from the device while the disc is rotating at constant speed.
  • the slider member could if desired be linearly movable.
  • its drive means (motor 80 in FIG. 1), is connected to a control or regulating system by means of which the position of the slider member can be adapted to the requirements of the parts of the plant connected thereto.
  • the guide arrangements 22 are constructed in a similar manner to the cover means 20 but do not have any slider members. If desired, they do not need to extend as far as the hub of the discharge member. They serve to render uniform the flow of the loose material.
  • the roof incline of the cover means 20 and of the guide arrangements 22 is to be selected so that the angle to the horizontal is greater than the angle of slope of the material disposed in the bunker so that it is not possible for bridges to form over parts thereof. Generally an angle of approximately 70° is sufficient, even for difficult cases for example, (wet lignite dust).
  • the upper disc 84 has extensions 86 fitted snugly inside the bunker outlet which run along the wall of the outlet; the covers and guide arrangements have corresponding recesses 88 through which the extensions 86 pass.
  • FIG. 5 finally shows an alternative arrangement in the upper section of the discharge devices; the figure shows the part of the devices above the cover means 20; for the remainder the arrangement can correspond to that of the embodiment of FIGS. 1 to 3 or to that of FIG. 4.
  • the hub 40 is extended upwards beyond the upper side of the rim 16 and above this rim there is fixedly installed in the bunker outlet 10 a sheet metal cone 100; the installation is effected, for example, by means of three supports 102 which are uniformly distributed round the circumference and join the cone to the wall of the bunker outlet.
  • Disposed inside the cone 100 is a bearing plate 104 with a central opening, in which there is disposed a bearing pin 106 of the hub 40, and with bearings 108 for pinions 110 which bearings are uniformly distributed round the circumference.
  • two bearings 108 and two pinions 110 can be seen. All the pinions mesh with a pivot pinion 112 which is keyed to the hub 40 or joined to it in some other manner.
  • auxiliary member 116 Disposed on the hub 40 there is a shoulder 114 which acts as an end journal bearing for an auxiliary member 116.
  • This auxiliary member is in the form of a partially conical sleeve with an inner toothed rim 118 at its upper free end and with blades 124, which are uniformly distributed about the circumference, at the lower end; the blades 124 extend radially from the lower edge 120 of the cone 100 to the lower edge 16 of the bunker outlet 10.
  • a support bearing 122 can be provided in a radial direction between the sleeve 116 and the hub 40.
  • a planetary gear is provided between the hub 40 and the sleeve 116, by means of which the sleeve and also the blades 124 are rotated, but at a substantially lower speed than the speed of the hub 40.
  • the surfaces of the cover means 20 the grinding arrangements 22 and of the cone 100 facing the material may be coated with a smooth material, for example plastics, to reduce the coefficients of friction.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Massaging Devices (AREA)
US05/596,591 1975-02-13 1975-07-17 Discharge device for a bunker Expired - Lifetime US3945537A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DT2506005 1975-02-13
DE2506005A DE2506005C3 (de) 1975-02-13 1975-02-13 Austragvorrichtung für einen Schüttgutbunker

Publications (1)

Publication Number Publication Date
US3945537A true US3945537A (en) 1976-03-23

Family

ID=5938773

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/596,591 Expired - Lifetime US3945537A (en) 1975-02-13 1975-07-17 Discharge device for a bunker

Country Status (16)

Country Link
US (1) US3945537A (de)
JP (1) JPS5849464B2 (de)
AT (1) AT348423B (de)
CA (1) CA1011703A (de)
CH (1) CH601088A5 (de)
CS (1) CS205011B2 (de)
DD (1) DD122955A5 (de)
DE (1) DE2506005C3 (de)
ES (1) ES445133A1 (de)
FR (1) FR2300730A1 (de)
GB (1) GB1512854A (de)
GR (1) GR57843B (de)
IT (1) IT1057181B (de)
PL (1) PL108699B1 (de)
SE (1) SE404518B (de)
ZA (1) ZA756516B (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0247682A1 (de) * 1986-05-23 1987-12-02 A. Wijnveen B.V. Einrichtung zum Entnehmen von Schüttgut aus einem Silo
US5113753A (en) * 1987-06-23 1992-05-19 Design Technology Corporation Apparatus for automatic application of condiments to a sandwich
US5622467A (en) * 1994-07-05 1997-04-22 Portasilo Limited Discharge means for a silo
US20070183853A1 (en) * 2004-01-29 2007-08-09 Ing. Per Gjerdrum As System tank and output unit for transporting untreated drill cuttings
US20080029555A1 (en) * 2005-12-15 2008-02-07 Jenike & Johanson, Inc. Feeder for uniformly supplying a mixture of particulate solids
CN101344263B (zh) * 2008-08-21 2010-06-09 江苏华粮机械有限公司 生物质直燃发电炉前料仓出料机
US20100155433A1 (en) * 2007-05-25 2010-06-24 Shionogi & Co., Ltd. Powder material supply device
WO2012112242A2 (en) * 2011-02-15 2012-08-23 Rdp Technologies, Inc. Sludge handling system with rotating discharge device for discharging sludge from a bin
US9622401B2 (en) * 2014-01-27 2017-04-18 Kinze Manufacturing, Inc. Meter for dispensing a granular product
CN110654729A (zh) * 2019-10-08 2020-01-07 徐州晟源环境科技有限公司 一种新型的污泥偏心破拱装置
US20200102163A1 (en) * 2018-10-01 2020-04-02 Brent J. Bloemendaal Grain bin sweep apparatus
CN110999614A (zh) * 2019-12-31 2020-04-14 东北农业大学 一种内旋式电动排肥器
CN111437980A (zh) * 2020-04-09 2020-07-24 临沂会宝岭铁矿有限公司 一种圆锥破碎机防堵塞进料护罩
CN115945265A (zh) * 2023-03-08 2023-04-11 广东睿智环保科技股份有限公司 一种高含量金属粉末涂料的研磨设备及研磨方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58170517U (ja) * 1982-05-12 1983-11-14 赤武エンジニアリング株式会社 粉末定量供給装置
JPS6082532A (ja) * 1983-10-06 1985-05-10 Sumitomo Heavy Ind Ltd サイロの排出装置
ZW15085A1 (en) * 1984-09-17 1986-01-29 Pioneer Seed Co Pty Ltd Dispenser for fluids
JPS6252964U (de) * 1985-09-20 1987-04-02
JPH02133987A (ja) * 1988-11-15 1990-05-23 Taiyo Yuden Co Ltd 回路基板とその製造方法
JPH02215179A (ja) * 1989-02-15 1990-08-28 Matsushita Electric Ind Co Ltd プリント基板

Citations (2)

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Publication number Priority date Publication date Assignee Title
US1906664A (en) * 1929-11-18 1933-05-02 Thorne Carl Busch Means for storing, measuring, and proportioning semifluent materials
US2574231A (en) * 1947-10-03 1951-11-06 Adamson Stephens Mfg Co Apparatus having rotatable means for feeding aeratable powdered material from storageand dispensing such material

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Publication number Priority date Publication date Assignee Title
US1966326A (en) * 1933-03-01 1934-07-10 West Bend Aluminum Co Dispenser
DE715252C (de) * 1938-05-22 1941-12-17 Kloeckner Humboldt Deutz Ag Entleerungsvorrichtung fuer Bunker
US2280166A (en) * 1939-08-12 1942-04-21 Redler Conveyor Co Conveying apparatus
GB764295A (en) * 1951-10-12 1956-12-28 British Organic Products Ltd Improvements in vessels for the storage or treatment of bulk material
DE955758C (de) * 1952-04-27 1957-01-10 Wilhelm Ponndorf Maschinenfabr Ausgabe-Silo
US3001350A (en) * 1958-06-10 1961-09-26 Forgrove Mach Packaging machines
US3091350A (en) * 1960-05-09 1963-05-28 Jr Walker L Wellford Storage bin
DE1275470B (de) * 1966-07-05 1968-08-14 Buckau Wolf Maschf R Austragsvorrichtung fuer einen Bunker mit einer im waagerechten Bunkerboden vorgesehenen zentralen Austragsoeffnung
DE1988582U (de) * 1968-02-14 1968-06-27 Peter Langen Austragvorrichtung fuer bunker u. dgl. mit einem abzugsfoerderband.
AT286873B (de) * 1968-11-21 1970-12-28 Moty Werk Michael Mayer Vorrichtung zur Entnahme von rieselfähigen Schüttgütern aus einem Großbehälter
DE1940714C3 (de) * 1969-08-09 1980-12-04 Maschinenfabrik Meyer & Co Gmbh, 6625 Puettlingen Vorrichtung zum Austragen von Schüttgütern aus einem Silo

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1906664A (en) * 1929-11-18 1933-05-02 Thorne Carl Busch Means for storing, measuring, and proportioning semifluent materials
US2574231A (en) * 1947-10-03 1951-11-06 Adamson Stephens Mfg Co Apparatus having rotatable means for feeding aeratable powdered material from storageand dispensing such material

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0247682A1 (de) * 1986-05-23 1987-12-02 A. Wijnveen B.V. Einrichtung zum Entnehmen von Schüttgut aus einem Silo
US5113753A (en) * 1987-06-23 1992-05-19 Design Technology Corporation Apparatus for automatic application of condiments to a sandwich
US5622467A (en) * 1994-07-05 1997-04-22 Portasilo Limited Discharge means for a silo
US20070183853A1 (en) * 2004-01-29 2007-08-09 Ing. Per Gjerdrum As System tank and output unit for transporting untreated drill cuttings
US7823607B2 (en) * 2004-01-29 2010-11-02 Ing. Per Gjerdrum As System tank and output unit for transporting untreated drill cuttings
US20080029555A1 (en) * 2005-12-15 2008-02-07 Jenike & Johanson, Inc. Feeder for uniformly supplying a mixture of particulate solids
US20100155433A1 (en) * 2007-05-25 2010-06-24 Shionogi & Co., Ltd. Powder material supply device
US20110000938A2 (en) * 2007-05-25 2011-01-06 Shionogi & Co., Ltd. Powder material supply device
CN101344263B (zh) * 2008-08-21 2010-06-09 江苏华粮机械有限公司 生物质直燃发电炉前料仓出料机
WO2012112242A3 (en) * 2011-02-15 2012-10-04 Rdp Technologies, Inc. Sludge handling system with rotating discharge device for discharging sludge from a bin
WO2012112242A2 (en) * 2011-02-15 2012-08-23 Rdp Technologies, Inc. Sludge handling system with rotating discharge device for discharging sludge from a bin
US9622401B2 (en) * 2014-01-27 2017-04-18 Kinze Manufacturing, Inc. Meter for dispensing a granular product
US20170245423A1 (en) * 2014-01-27 2017-08-31 Kinze Manufacturing, Inc. Meter for dispensing a granular product
US10499558B2 (en) 2014-01-27 2019-12-10 Kinze Manufacturing, Inc. Meter for dispensing a granular product
US20200102163A1 (en) * 2018-10-01 2020-04-02 Brent J. Bloemendaal Grain bin sweep apparatus
US11225387B2 (en) * 2018-10-01 2022-01-18 Brent J. Bloemendaal Grain bin sweep apparatus
CN110654729A (zh) * 2019-10-08 2020-01-07 徐州晟源环境科技有限公司 一种新型的污泥偏心破拱装置
CN110999614A (zh) * 2019-12-31 2020-04-14 东北农业大学 一种内旋式电动排肥器
CN111437980A (zh) * 2020-04-09 2020-07-24 临沂会宝岭铁矿有限公司 一种圆锥破碎机防堵塞进料护罩
CN111437980B (zh) * 2020-04-09 2022-03-18 临沂会宝岭铁矿有限公司 一种圆锥破碎机防堵塞进料护罩
CN115945265A (zh) * 2023-03-08 2023-04-11 广东睿智环保科技股份有限公司 一种高含量金属粉末涂料的研磨设备及研磨方法
CN115945265B (zh) * 2023-03-08 2023-05-09 广东睿智环保科技股份有限公司 一种高含量金属粉末涂料的研磨设备及研磨方法

Also Published As

Publication number Publication date
ZA756516B (en) 1976-09-29
ATA82776A (de) 1978-06-15
PL108699B1 (en) 1980-04-30
IT1057181B (it) 1982-03-10
JPS5849464B2 (ja) 1983-11-04
CH601088A5 (de) 1978-06-30
AU8262475A (en) 1977-01-06
CA1011703A (en) 1977-06-07
GB1512854A (en) 1978-06-01
DD122955A5 (de) 1976-11-12
JPS5193054A (de) 1976-08-14
DE2506005C3 (de) 1985-10-10
AT348423B (de) 1979-02-12
GR57843B (en) 1977-07-04
CS205011B2 (en) 1981-04-30
ES445133A1 (es) 1977-05-16
FR2300730B1 (de) 1978-08-18
DE2506005A1 (de) 1976-08-19
FR2300730A1 (fr) 1976-09-10
SE7601414L (sv) 1976-08-16
DE2506005B2 (de) 1981-05-21
SE404518B (sv) 1978-10-09

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